Service Metal
300# Black Malleable Tees
- SKU:
- XBT
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
300# Black Malleable Iron Tee
300# Black Malleable Iron Tees are designed to create dependable three-way branch connections in higher-duty threaded piping systems.
Manufactured from durable malleable iron, these Class 300 tees provide strong, reliable performance in industrial, commercial, plumbing, mechanical, gas, air, oil, and compatible fluid piping applications where a branch line must connect to a main run while maintaining system strength and integrity.
Product Highlights
- Three-way threaded tee configuration
- Female NPT threaded openings
- Creates a 90° branch connection
- Designed for equal-size run and branch connections
- Suitable for dividing or combining flow
- Designed for higher-duty Class 300 threaded piping systems
- Durable black malleable iron construction
- Malleable castings conform to ASTM A197
- Malleable fitting dimensions conform to ASME B16.3
- NPT threads conform to ASME B1.20.1
- Class 300 fittings are UL Listed
- Suitable for gas, oil, air, and compatible fluid piping systems
- Manufactured in an ISO-certified facility
- Country of origin: Thailand & China
Technical Specifications
| Product Type | Tee |
|---|---|
| Material | Malleable Iron |
| Finish | Black |
| Pressure Class | 300# |
| Connection Type | Female NPT Threaded |
| Configuration | Three-Way Equal Tee |
| Branch Angle | 90° |
| Primary Function | Branch Connection / Flow Distribution |
| Casting Standard | ASTM A197 |
| Dimensional Standard | ASME B16.3 |
| Thread Standard | ASME B1.20.1 |
| Listing | Class 300 Fittings are UL Listed |
| Manufacturing | ISO-Certified Facility |
| Country of Origin | Thailand & China |
Construction & Applications
Malleable Iron Construction
Manufactured from malleable iron castings conforming to ASTM A197 for dependable strength and durability in demanding threaded piping systems.
Three-Way Branch Connection
The tee provides three female-threaded openings and creates a perpendicular 90-degree branch from the main piping run.
Class 300 Design
The heavier Class 300 construction is intended for more demanding threaded piping applications than standard Class 150 malleable iron fittings.
Why Use a 300# Malleable Iron Tee?
Branch Line Distribution
A tee allows flow to be divided from a main line into a secondary branch or combined from two lines into one threaded run.
Higher-Duty Threaded Systems
Class 300 malleable iron fittings are suited for more demanding threaded piping applications where a robust fitting design is required.
Typical Applications
Industrial & Mechanical Piping
- Industrial piping systems
- Mechanical piping
- Compressed air systems
- Equipment connections
- General fluid piping
Common Service Applications
- Gas piping
- Oil piping
- Air lines
- Utility piping
- Higher-duty threaded systems
Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to confirm sizing before ordering 300# black malleable iron fittings. You can also review the tee specification sheet and Certificate of Conformance below.
Standards & Approvals
ASTM A197
Malleable iron castings conform to ASTM A197.
ASME Standards
Malleable fitting dimensions conform to ASME B16.3, while NPT threads conform to ASME B1.20.1.
UL Listing
The supplied product information states that Class 300 malleable iron fittings are UL Listed.
Related Malleable Iron Standards
- Malleable bushings, plugs, and locknuts conform to ASME B16.14.
- Malleable unions conform to ASME B16.39.
- NPT threads on applicable fittings conform to ASME B1.20.1.
- Class 300 fittings are UL Listed according to the supplied product information.
Need More 300# Black Malleable Iron Fittings?
Browse our complete selection of 300# black malleable iron fittings, including tees, elbows, street elbows, couplings, bushings, unions, and other heavy-duty threaded fittings.
Frequently Asked Questions
What is a 300# black malleable iron tee used for?
It is used to create a three-way threaded branch connection in a higher-duty piping system.
What type of connections does this tee use?
The tee uses female NPT threaded connections on all three openings.
Does this tee provide a 90-degree branch?
Yes. The branch outlet is positioned at 90 degrees to the main run.
Are all three connections the same size?
This standard tee is intended for equal-size run and branch connections. Use a reducing tee when different nominal connection sizes are required.
Can a tee be used to split or combine flow?
Yes. Depending on the piping layout, a tee can divide flow from one line into two paths or combine two flow paths into one.
How is a 300# tee different from a 150# tee?
The Class 300 fitting is a heavier-duty fitting intended for more demanding threaded piping applications than a standard Class 150 fitting.
What material standard applies?
The supplied product information states that the malleable iron castings conform to ASTM A197.
What dimensional standard applies?
Malleable fitting dimensions conform to ASME B16.3.
What thread standard applies?
NPT threads conform to ASME B1.20.1.
Are Class 300 malleable iron fittings UL Listed?
Yes. The supplied product information states that Class 300 fittings are UL Listed.
Important Ordering & Installation Notes
- Confirm the required nominal pipe size before ordering.
- This standard tee is intended for equal-size run and branch connections.
- All three openings use female NPT threads.
- The branch connection is positioned at 90° to the main run.
- Use a reducing tee if different connection sizes are required.
- Confirm that Class 300 construction is appropriate for the intended piping system.
- NPT threads conform to ASME B1.20.1.
- Malleable fitting dimensions conform to ASME B16.3.
- Use compatible pipe, fittings, thread sealant, and accepted threaded installation practices.
- Do not assume the “300#” class designation alone establishes allowable working pressure for every service condition.
- Verify pressure, temperature, media compatibility, applicable codes, and system requirements before installation.
- Refer to the specification sheet and Certificate of Conformance for additional product information.
